aggravation russian

• осложне́ние

  complication, difficulty, aggravation, worsening

  complication

• обостре́ние

  escalation intensification sharpening worsening, aggravation

• нервотрёпка

  nerve-racking ordeal, hassle, stress, aggravation

• усложне́ние

  complication, increase in complexity, making more complicated

  complication, added difficulty, aggravation

• усугубле́ние

  aggravation, worsening, exacerbation, escalation

  increase, intensification, deepening, growth